Mono UC Wired Headset - USB-A ConnectionMono UC Wired Headset - USB-A Connection The Cleyver Flexdesk USB Mono headset is perfect for people who work with headphones all day. It was designed to offer optimal comfort and lightness to all its users. You can wear it for a long time without realizing it. Thanks to the mono headset, you benefit from optimal telephone comfort while remaining attentive to your work environment and your colleagues. The Cleyver Flexdesk USB Mono headset is perfect for people who work with headphones all day. It was designed to offer optimal comfort and lightness to all its users. You can wear it for a long time without realizing it. Thanks to the mono headset, you benefit from optimal telephone comfort while remaining attentive to your work environment and your colleagues.